<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			*{
				padding: 0;
				margin: 0;
			}
			img{
				width: 150px;
			}
			.box{
				height: 150px;
				/*水平居中*/
				text-align: center;
				padding-top: 50px;
				background-color: rgb(96, 128, 170, 0.3);
			}
			body{
				background-image: url(../img/2.jpg);
			}
		</style>
	</head>
	<body>
		<div class="box">
			<img src="../img/1.jpg"/>
			<img src="../img/2.jpg"/>
			<img src="../img/3.jpg"/>
			<img src="../img/4.jpg"/>
			<img src="../img/5.jpg"/>
		</div>
		
		<script type="text/javascript">
			window.onload = function() {
				var images = document.getElementsByTagName("img");
				for (var i = 0; i < images.length; i++) {
					images[i].onclick = function() {
						// this代表当前设置点击事件的对象
						var imageSrc = this.src;
						// document.body.style.backgroundImage = "url(../img/2.jpg)";
						// 豆豆加加
						document.body.style.backgroundImage = "url(" + imageSrc + ")";
					}
				}
			}
		</script>
	</body>
</html>
